Lubricant compressor



*'Feb. 23 ,1926.

1,574,279 E. w. DAvls LUBRI CANT COMPRESSOR Fina Feb.4 16. 1921 Patented Feb. 23, 1926.

ERNEST W. DAVIS, OF OAK PARK, ILLINO is, AssIeNoR rro THE BAssIcx MANUFACf TURING C0.,A OF CHICAGO, ILLINOIS, CORPORATION OF DELAWARE.

LUBBICANT Application led February To, all whom t may con/cern: lBe it known that I, ERNEST W. DAVIS, a citizen of the United States, and resident of Oak Park, in the county of Cook and State ot' Illinois, have invented certain new and useful Improvements in Lubricant Compressors, ofwhich the following is a full, clear, concise, and exact description, reference being had to fthe accompanying drawings, forming a part of this specification.

. klIy invention vrelates to improvements in lu rlcant compressors, and is particularly concerned with the provision ofl a poweroperated compressor for supplying lubricant under pressure to any desired point.

My `invention is particularly adaptedwto form a part of a lubricating system 'comprisin a plurality of nipples adapted to be secure tothe bearings to be lubricated and a compressor having a 'discharge conduit provided with a coupling` which can be successively attached to anddetached from the nipples for the purpose of supplying lubri- -cant'hereto under pressure. The objectsof myfinvention are First; to provide a holding a comparatively large supply of lubricant and means forv placing the lu/brcant under pressures sufficient to force .the lubricantto the point or pointsl desired.

Secondgto provide a compressor ofl the character described so constructed that'it can be quickly and easily filled with lubri cant.

Third; to provide a compressor riven by a motor, the'connections between he com pressor and the motor being suchtha-t the motor can ,continue to operate continuously while the pressure on the lubricant is maintained substantially constant even though no lubricant is .being dischargedfrom the ,compressor.

Fourth; to provide a compressor of the character described which the driving connections between lthe motor and the member which exerts pressure upon the lubricant, are such that while the pressure can be efiiciently applied to the lubricant, the reacl"tion of this pressure in the .directionl of the motor -will not havefiany injurious effect upon thefmotor. Fifthto provide a' compressor ofthe charac described in which the driving compressor capable of COMPRESSOR.

1e, 1921. serial No. 445,356.

connections between the motor and the comi .pressor proper comprise a yieldable member which will absorb the power of the motor when the pressure upon the lubricant has reached a predetermined degree.

Sixth; to provide 'a power-driven compressor in which the connections between the motor and compressor proper include a spring so connected that it will transmit the power of the motor to the lubricant until the lubricant is placed under a predetermined pressure, aftenwhich the spring itself will` absorb the power of the motor, and, finally, Seventh; to provide a power-operated compressor of the character last described wherein means are providedfor preventing the spring upon resumingits untensioned condition from communicating its power to the motor.

Other objects will appear as this descrip-- tionp'ogresses, reference being had to the `accompanying drawings, in which-.

Figure lis a plan View of my improved compressor, and' Figure 2 is a side elevatio Section showing certain details lofconstruction thereof.

In both views, similar reference characters will vbe used for referring to similar parts.

n, partially inv I prefer to mount the compressor which I 'I am. about to vdescribe upon al platform 5 which is portasbly mounted upon a plurality of casters 6 and which-may be drawn from plac te place as desired by means of the tongue 7 and `handle 8. The platform 5`is provided with an thebase 'casting or the opening 9-for receiving lower end closure 1,0 of barrel 11, this' casting being'secured to 4the `platform lby means of bolts 12 0r in any other suitable mannen ,A ring 13 is ,screwthreaded Orotherwise secured -to the upper end of the' barrel 11 and supports the two vertical pinsV 1,4 and- 15. The first ofthese'pins acts 'as a pivot in for the cap 16,- this cap being, provided ith asuitable bearing 17 for receiving the .pin 14. The pin 15 acts as a stop to with relation to the barrel '11 land for this purpose the cap is'provided with a llateral extension 18 which is provided withlongitudinally extending slot- 19 adapted to re. ceive the pin 15.

properly position the cap 16/1'00 los A plunger comprising'the cup-leather 21,

the face plate 22 and the follower-plate 23 is slidable in the barrel 11 and secured to the inner reduced end portion 24 of the screwthreaded plunger rod 25. The plunger rod 25 extends through a correspondingly threaded opening 26 in the end of the cap 16 and is provided at its outer end with a handle 27 by meansofwhi'ch it can be manually rotated.

A recess 28 is formed in the inner side of the cap 16 which is of suficient size to reive the plunger, when the plunger rod 25 irotated to move the plunger to the upper limit of its stroke. When ythis is done, the cap 16 can be rotated about the pin 14 as an axis so as to completely uncover the upr end of the barrel 11 to facilitate the lling of the same. The inner side of the ring 13 is beveled as shown at 29 to compress the flange of the cup-leather 21 and guide it into the'barrel after the barrel has been filled and the cap `has been replaced in registry withthe barrel.

yPower for operating the plunger may be obtained from a motor M which is secured to the platform 5 and which I have here illustrated as being an electricl motor, although my invention is not limited to the use of any particular type of motor. The shaft 30 of thel motor drives a worm 31 which, in turn, drives the worm gear 32.`

The worm gear 32 is rigidly secured to the vertical shaft 33, the upper end of which rotates in a bearing 34 formed integrally with the ring 13. The. lower end ofthe shaft 33, the worm 31 and the worm gear 32 find suitable bearings and are housed in a casing 35 which is secured to one side of the barrel 11.

A ratchet gear 36 is mounted upon the upper side of the cap 16 and provided with a central opening through which the plunger rod 254 projects. A longitudinally extending slot 37 is formed in one side of' the plunger rod 25 for receiving one edge of a spline 38, the Aother edge of which is secured in a corresponding slot in the ratchet gear 36. By this construction, anyl rotation ofthe ratchet ear 36 is transmitted to the plunger rod 25 ut by reason of the spline connection between the ratchet gear and the plunger rod, the plunger rod can move longitudinally -with respect to the ratchet gear. j

One end of the pawl arm 40 is provided with an upper ortion 41 whichis rotatably mounted upon tlie upwardly extending cylin-A drical projection 420i the ratchet gear 36. The other end or the crank or lever 40 is connected with the crank pin 43 secured to the upper end-of the shaft 33 by means of a tension spring 44,- the opposite ends of this spring being pivotall v secured to the pin '43 and the free endo the crank 40, respectively. l A pawl 45 is provlded wlth a Shaft `the opposite ends of which bear against the handle 47, and a pin carried by the pawl arm 40,l respectively, provides means for yieldingly holding the pawl 45 `in enga ement with the'teeth ofthe ratchet gear;

A discharge conduit 50 communi ates with the lower end of the cylinder 11 and is provided with a stand pipe 51 to the upper end of which can be connected a flexible metallic conduit 52 designed to carry the lubricant undery considerable pressure and which can be flexed to deliver the lubricant at any point desired. Where my improved lubricant compressor is ,to form a part of a lubricating system such as referred to above, the end of the flexible conduit can be provided with a coupling member such as that disclosed in my Patent No. 1,401,765 dated December 27, 1921, or a coupling of the usual type can be used in combination with a means for controlling the flow of `lubricant through the discharge conduit, disclosed in my Patent No. 1,496,209, .dated June 3, 1924.

VhenA substantially all of the lubricant has been discharged from the barrel 11 and the plunger occupies substantially the position shown `in Figure 2, and it is desired to refill the barrel, the operator releases the pawl 45 from theratchet gear and then rotates the shaft 25 by means of the handle 27 to bring the plunger up into the recess The thumb screw 20 is then released and the cap 16 swung to one side. The barrel can then be filled to a level just below the 'of the pi l43 undiminished to the end of the pawl arm 40, thereby causing the crank and the pawl 45 to move in a direction to cause thepawl 45 to engage the teeth of the ratchet gear 36 and rotate this gear and the plunger rod 25 splned thereto. Upon Lthe return stroke of the pin 43 the tension 'spring 44 will act as' asolid rod and thus cause the free end of l:the pawl arm 40 to niove 'in the opposite direction. The pawl 45 will thus be caused to slide over the teeth of the gear 36 withoutmoving it or the attached plunger the power from the rod. This operation will be continued until fpressure upon the lubricant, becomes s" great that the spring 44 stretches or iiexes during the outward movement of the crank pin 43. When thiys pressure has been reached, it will remain substantially constant, even though the motor continues to operate and it is immaterial. whether lubricant is being Withdrawn from the barrel 11 or not.y

In this manner, thefmotor can continue to operate without imposing an undue load tion of the compressor being damaged or destroyed by @undue pressure set up in the barrel,'or tensions created in the operating portios thereon, ,y When the pressure on' the lubricant has reached vsuch a degree that the spring is alternately flexed and released, there will be a tendency for `itensioning or releasing stroke, to comunicate its power to the motor shaft and thus accelerate the motor. This action is, howcver, eiiectually revented by the Worm and gear connection between the motor andthe .shaft 33,- the pitch ofthe worm threads and 'vcntany the worm wheel teeth being such as to pretorque exerted upon' the shaft 33 rom beingtransmitted. to the shaft'30 ot the'motor.

`Whenever lubricant vis `withdrawn lfrom the compressor so as to reduce the pressure pressure determined by' below the maximum the 'tension of the s'pring44, this spring will cease to flex and will again act to transmit .crank t0 whereupon the plunger will be moved downwardly thus tending to keep the,

pressure on the lubricant constant.

While' ll vhave described the details of construction of the preferred vembodiment of,`

my invention, Jit is to `,be clearly understood that my invention is not7 limited to these de tai s but istcapable of otheradaptations and'I mbdiic'ations Within pended claims'.

Having thus described my invention, what the scope ofthe apf 1. A lubricantcompresrsor' barrel, avplunge slidable in 'cap for said barrel having a 'with' and openinginto said ceiving `said edtoswing on an axis parallel with the'ax'is of said barrel, the end of said cap having saidbarrel, a recess coaxial barrel for rescreW-threaded .Y plunger "rod extending through said threaded opehing andcarrying said plunger at, its inner end, a handle on the cuter end of saidplunger rod, a ratchet gear mounted on the end of said cap and having an opening for i slidably Lreceiving said upon it, and there is no' danger of anypor'4 motor to the end of the.

. said pawl arm compr1s1ngl a Ithrough said threaded A y l ing said plungerA at its `inner end', a ratchet comprising a plunger, said cap being'lnount-- adapted to rotate the Aing an 'plunger rod, means for splining said ratchet v Inected to said shaft eccentrically thereof.

A lubricant compressor comprising a barrel, a plunge slidable 1n said barrel, a cap for sald barr .l mounted to swing on an axis parallel' with the axis of said barrel, the c end of said cap having a screwsthreaded openingv theretlu'ough, a screw-threaded plunger rod extending through said threaded opening and carrying said plunger at its inner end, a ratchet gear mountedpn the end of said cap and having an opening for slidreceivmg said plunger rod,/ 1Lmeans for splining Saidj ratchet gea-r to sald lunger rod, a pawl arm, a paWl secured to sald paWl arm for engaging said ratchet, and means for oscillating said4 pawl arm comprising a. sha-ft mounted parallel With/said plunger rod ,and a spring having one end connected to the free end 'of said pawl( arm, and the other end connected to said shaft eccentrically thereof.

V3. A lubricant compressor'comprising a barrel, a plunger slidable in said barrel, a .cap for said barrel, the en cl of said cap hav# ing al screw-threaded openingctherethrough, a screw-threaded plunger rodV extending lthrough said threaded opening v'and carrying ,said plunger at its for rotating said plunger rod, a; awl arm, a: pawl secured to said crank arm or engaging'said ratchet, and means for oscillating shaft mounted parallel with said plunger rod, and a spring y having one end connected to the free end of saidpawl arm, and the other end connected to saidshaft veccentrically thereof.

4. 'A lubricant. compressor comprising a barrel, a plunger slidable in said barrel,a

Icap J[for said barrel, theend of said cap'havingv a screw-threaded opening therethrough, a` screw-threaded plunger rod extending opening and carryinner end, a ratchet gear gear, for rotating said plunger rod, a pawl arm, apawl secured'to said pawl arm for engaging saidratchet, means for oscillating sai f'pawl arm comprising a spring having oneacnd connected to the free Iend of said pawlarm' and means for alternately Hexing and, releasing saidspring. a screw-threaded opening therethrough, 'av i 5. The combination with a'container for lubricant, of a plunger movable Within said container, a screw for actuating said plunger extending through said container, a rotat-y able collarl surrounding fsaid screw and same, said collar havannular' series of teeth` upon its 130,

periphery, an oscillatory handle, and a spring pressed .dog upon said handle and engagea ble with the teeth upon said collar.

6. The combination with a barrel adapted to contain lubricant, of a plunger movable Within. said barrel, a screw fastened to said; plunger and threaderdly secured to said barrel, said screw having a longitudinally extending key-Way, a collar sleeved upon said screw and provided with means engageable in the key-Wayl in said screw forrotating said screw from/said collar, said collar having an annular series ofteeth `on its periphery, an oscillatory handlegj'ourhalled upon said collar, and means upon said handle engegeable with the teeth u on saidv collar.

v7.- A lubricating outgt fcomprising a pump, a rotary power source, and a speed reducing transmission lbetween said source' and said. pump, said transmission including tito speed reductions capable of transmitting .power from said source to said pump but not in the other direction, and a resilient take-up intermediate saidtwo. reductions,

speed reductions, the first and'third reducf tions being irreversible and the second including a resilient take-up for-permitting said source to operate when said pump is stalled by its load.

- 9. A lubricating outfit comprising a pump, a powerisourc'e, andz a speed reduc' ing transmission between said source and said pump, said transmzssion including two speed -reductions, the reduction next the' source being irreversible and the other including` a resilient take-'up' for permitting said source to operate when said pump is stalled by its load. v v.

In witness whereof, I hereunto subscribe my. name this 27th day of January, 1921.

' ERNEST W. DAVIS. 

